In the construction of bridge piers and deep-water docks, it is necessary to provide the workers a water-free environment to excavate the foundations. In shallow water and on dry land, coffer dams and open-air caissons are sufficient. For deep water,...
In geotechnical engineering, a caisson is a retaining, watertight structure used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, or for the repair of ships. These are constructed such that the water can...
Construction difficulties yield valuable lessons In soils with a high water table, underground concrete structures such as bridge piers, intake structures, pump houses, and dumper pits can be constructed using several methods to prepare for construction of the structure, including: 1. Dewatering...
Q. We are installing some concrete caissons using an ordinary caisson mix (similar to CDOT Class BZ) designed for 6- to 8-inch slump placements. The caissons range from 30 to 60 inches in diameter and are 20 to 25 feet deep. We have not...
Seventeenth-century masons built Amsterdam on a foundation of wooden poles planted in soggy, sandy ground, leaving behind a beautiful architectural museum _ but one with walls prone to sinking or crumbling without warning. So how do you dig a subway under it?Very carefully.Construction of a...
Less pomp, more circumstance. Gerald R. Ford's state funeral is missing some of the grandeur of the one for Ronald Reagan two years ago, a reflection of the 38th president's modest ways and lesser imprint on the nation, according to further planning details released Thursday.President...
